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Question about hardware instancing and HLSL semantics

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When you are doing instancing your input layout might look something like this (from Frank Luna's DX11 book): const D3D11_INPUT_ELEMENT_DESC InputLayoutDesc::InstancedBasic32[8] = { {"POSITION", 0, DXGI_FORMAT_R32G32B32_FLOAT, 0, 0, D3D11_INPUT_PER_VERTEX_DATA, 0}, {"NORMAL", 0, DXGI_FORMAT_R32G32B32_FLOAT, 0, 12, D3D11_INPUT_PER_VERTEX_DATA, 0}, {"TEXCOORD", 0, DXGI_FORMAT_R32G32_FLOAT, 0, 24, D3D11_INPUT_PER_VERTEX_DATA, 0}, { "WORLD", 0, DXGI_FORMAT_R32G32B32A32_FLOAT, 1, 0, D3D11_INPUT_PER_INSTANCE_DATA, 1 }, { "WORLD", 1, DXGI_FORMAT_R32G32B32A32_FLOAT, 1, 16, D3D11_INPUT_PER_INSTANCE_DATA, 1 }, { "WORLD", 2, DXGI_FORMAT_R32G32B32A32_FLOAT, 1, 32, D3D11_INPUT_PER_INSTANCE_DATA, 1 }, { "WORLD", 3, DXGI_FORMAT_R32G32B32A32_FLOAT, 1, 48, D3D11_INPUT_PER_INSTANCE_DATA, 1 }, { "COLOR", 0, DXGI_FORMAT_R32G32B32A32_FLOAT, 1, 64, D3D11_INPUT_PER_INSTANCE_DATA, 1 } }; My question is, what semantic names can I give to the instanced data? Here Frank Luna is using "WORLD" but I don't see that mentioned on any HLSL semantic reference pages. Also, what if I want to pass a view-projection matrix as part of the instanced data? Can I use "VIEWPROJ"? Does it matter? Does the runtime use the semantics at all? Cheers!

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